diff --git a/core.c b/core.c
index c90a520..55dae57 100644
--- a/core.c
+++ b/core.c
@@ -11,7 +11,7 @@ main(int argc, char **argv)
 
 	int res = f(x, y);
 
-	printf("res = %d\n", res);
+	printf("un res = %d\n", res);
 
 	return 0;
 }